diff --git a/plugins/varnish4/varnish4_ b/plugins/varnish4/varnish4_
index f348151e..60df9de3 100644
--- a/plugins/varnish4/varnish4_
+++ b/plugins/varnish4/varnish4_
@@ -923,7 +923,7 @@ sub xml_commit_state
 		if ($key eq 'flag') {
 			$data = translate_type($data);
 		}
-		if (defined($type) and $type ne "" and defined($ident) and $ident ne "") {
+		if (defined($type) and $type ne '' and defined($ident) and $ident ne '') {
 			$data{$type}{$ident}{$name}{$key} = $data;
 		} else {
 			$data{$name}{$key} = $data